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관해 유도 후 글리벡과 동종 조혈모세포 이식으로 치료한 필라델피아 염색체 양성 급성 골수성백혈병 3예
윤재호 ( Jae Ho Yoon ),김희제 ( Hee Je Kim ),남해성 ( Hae Seong Nam ),박윤정 ( Yun Jung Park ),엄기성 ( Ki Seong Eom ),민우성 ( Woo Sung Min ),김춘추 ( Chun Choo Kim ) 대한내과학회 2007 대한내과학회지 Vol.72 No.3
The Ph-chromosome is the hallmark of chronic myelogenous leukemia (CML), but it has also been reported infrequently for de novo AML. This cytogenetic variant of AML is characterized by a poor prognosis associated with extraordinary drug resistance. Experience with the use of imatinib mesylate for Ph-chromosome-positive de novo AML is limited because of the rarity of the disorder. Thus, allogeneic hematopoietic stem cell transplantation (HSCT), as a post-remission therapy, should be considered. In three patients with Ph-chromosome-positive AML, we achieved complete remission with induction chemotherapy and the use of an imatinib cycle as an interim therapy. Subsequently, all patients received consolidation chemotherapy followed by imatinib cycles, bridging the time to allogeneic HSCT. All patients were successfully transplanted, and have been in excellent condition, with a median follow-up duration of 15 months (range, 2-25 months). We report on these cases and present the treatment strategy of induction chemotherapy, maintenance with imatinib mesylate, and final allogeneic HSCT as a representative paradigm for the treatment of Ph-chromosome-positive de novo AML. (Korean J Med 72:326-330, 2007)
RF 스퍼터링 증착된 TiO₂ 박막의 염료감응형 태양전지 적용 연구
김미정(Kim, Mi-Jeong),서현웅(Seo, Hyun-Woong),최진영(Choi, Jin-Young),조재석(Jo, Jae-Suk),김희제(Kim, Hee-Je) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
Sputter deposition followed by surface treatment was studied using reactive RF plasma as a method for preparing titanium oxide(TiO₂) films on indium tin oxide(ITO) coated glass substrate for dye-sensitized solar cells(DSSCs). Anatase structure TiO₂ films deposited by reactive RF magnetron sputtering under the conditions of Ar/O₂(5%) mixtures, RF power of 600W and substrate temperature of 400?C were surface-treated by inductive coupled plasma(ICP) with Ar/O₂ mixtures at substrate temperature of 400?C, and thus the films were applied to the DSSCs, The TiO₂ Films made on these exhibited the BET specific surface area of 95, the pore volume of 0.3cm² and the TEM particle size of {sim}25 nm. The DSSCs made of this TiO₂ material exhibited an energy conversion efficiency of about 2.25% at 100mW/cm² light intensity.
트랜스포머 자가 LC공진을 이용한 고전압 유전가열 연구
정재훈(Jae-Hoon Jeong),김희제(Hee-Je Kim),김수원(Soo-Won Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.12
Generally, stray capacitance is unnecessary element of designing circuit, because it can not be predicted by a designer. But we propose LC Resonant Circuit using stray capacitance of transformer. This method proposes miniaturization of circuit, because LC Resonant Circuit can be make simply to using stray capacitance instead of capacitor and size of transformer is reduced. Finally, we research aspect of dielectric heating by change of frequency and output voltage using developed converter.
다중 공진형 컨버터를 이용한 이중 캐비티 구조의 4Hz 의료용 루비레이저 시스템 개발
이재철(Jae-cheol Lee),정도(Tao Zheng),박성욱(Piao Shengxu),허국성(Guo-Cheng Xu),김희제(Hee-Je Kim) 대한전기학회 2015 전기학회논문지 Vol.64 No.8
Various laser systems have been widely used in almost all industrial technologies because they have high energy density, directivity and coherence. Recently the clinical application is becoming wider in medical parts such as incurable disease, diagnosis and so on. Generally, ruby laser beam has the greatest efficacy for removing tattoos, freckle and other skin problem. But current medical ruby laser system has the maximum repetition rate of 2Hz and optical output beam energy of 1J. Many medical doctors really want to have a high repetition ruby laser system because that can reduce the operation time. We investigated a new ruby laser system with high repetition rate of 4Hz using double cavities. Furthermore, we develop a new power supply system adopting zero voltage switching(ZVS) to minimize switching loss by LLC resonant converter designed as 2kW class.
LLC 공진형 컨버터를 사용한 다용도 Nd:YAG 레이저 전원장치 설계
정도(Tao Zheng),김희제(Hee-Je Kim),이재철(Jae-cheol Lee),허국성(Guo-Cheng Xu) 대한전기학회 2015 전기학회논문지 Vol.64 No.6
LLC resonant converter has been widely used because of its high efficiency and high energy density. In this paper, we designed a LLC resonant converter as the main power supply of the Nd:YAG pulse laser. First harmonic approximation (FHA) is used to model the LLC resonant converter. FHA equivalent circuit model and the transfer function of the LLC resonant converter is proposed. Soft start technology is also used to suppress the surge current. The laser output simulation test result is identical with the practical test, the laser energy of every pulse can reach up to 2.5J, and the pulse per second (PPS) can be adjusted from 6 to 18. The power system is verified stable and reliable by both of the simulation and experiment results.
LLC 공진형 컨버터를 적용한 의료용 루비 레이저 전원장치 개발
김동현(Dong-Hyun Kim),정재훈(Jae-Hun Jung),김희제(Hee-Je Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.7
LLC resonant converter is used to control laser power density in ruby laser power supply. Zero voltage switching(ZVS) is implemented to minimize the switching loss by the LLC resonant converter. Laser output power is investigated and experimented by changing the output current. That current is controled by the charging voltage of capacitor. From those results, we obtained the maximum laser output of 1.94J at the discharge current of 860A and the pulse repetition rate of 1Hz.
All- trans retinoic acid 관해 유도 치료 후 중추신경계에서 재발한 급성 전골수성 백혈병 5예
김은옥 ( Eun Ok Kim ),길상현 ( Sang Hyun Gil ),최재기 ( Jae Ki Choi ),이현정 ( Hyun Jeong Lee ),김희제 ( Hee Je Kim ),이종욱 ( Jong Wook Lee ),민우성 ( Woo Sung Min ) 대한내과학회 2011 대한내과학회지 Vol.80 No.2
Acute promyelocytic leukemia (APL) is distinguished from other subtypes of acute myeloid leukemia (AML) by its distinctive morphology, specific chromosomal abnormality, coagulopathy, and unique response to treatment with all-trans retinoic acid (ATRA). Central nervous system (CNS) involvement is rare in APL. Most CNS relapses occur in patients with hyperleukocytosis at initial presentation, and the optimal management of such patients is still controversial. We report five patients with APL who had CNS relapse with or without evidence of cytological and molecular disease of the bone marrow after ATRA treatment. Brain magnetic resonance imaging revealed leptomeningeal infiltration and cerebrospinal fluid examination showed the presence of promyelocytes. Patients were treated with a combination of systemic chemotherapy and radiotherapy with or without intrathecal chemotherapy, and most were subsequently treated with arsenic trioxide (ATO) as maintenance therapy. Among these patients, one received allogeneic stem cell transplantation in second complete remission. (Korean J Med 2011;80:231-237)
변압기 지역 코로나 전자파 간섭에 의한 계측제어설비 영향에 관한 연구
민문기(Moon-Gi Min),이재기(Jae-Ki Lee),박진엽(Jin-Yeub Park),김희제(Hee-Je Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.2
The Electromagnetic Interference(EMI) generating from corona discharge of transformer area can interference the digital Instrument and Control(I&C) systems located nearby transformers. When the potential gradient of the electric field around the conductor is high enough to form a conductive region but not high enough to cause electrical breakdown to nearby objects, the EMI of corona discharge emits with the conducted and radiated noise and it interferences the signals of the I&C systems. Since digital I&C systems have an efficiency and competitive price, the analog I&C systems have been upgraded and displaced with the digital I&C systems but which have less EMI Immunity. There was no assessment to I&C systems by EMI generating corona discharge nearby transformers. When the safety-related I&C systems are installed in plants, the verification of equipment EMI should be done not in site-specific test but in test facilities. There are the need to do the site-specific EMI evaluation of corona discharge nearby transformers. This paper assesses the margin between plant emission limits and the highest composite plant emission of corona. When the non safety-related I&C systems are placed in transformer area, it suggests the appropriate radiated susceptibility level to EMI of corona discharge.